Swegon Home Solutions CASA. W9 Smart. Installation, commissioning and maintenance instruction. W9_e_EN-t

Swegon Home Solutions CASA W9 Smart Installation, commissioning and maintenance instruction W9_e_EN-t

Contents Installation, operation and maintenance instructions for design engineers, installation engineers and service personnel Important information... 3 1. General Description... 4 1.1 Enclosure...4 1.2 Fans...4 1.3 Filter...4 1.4 Heat exchanger...4 1.5 Temperature...4 1.6 Protective functions...5 2. Installation... 6 2.1 Ventilation unit installation site...6 2.1.1 Mounting on base...6 2.2 Condensate discharge...6 2.3 Ducts...6 2.4 Sealing around duct penetration collars...6 2.5 Electric and control cables...8 2.6 Installation of the Smart control panel...9 2.7 Connecting water pipes in the Econo model...9 3. Commissioning... 10 3.1 Air flows...10 3.1.1 Setting the basic air flows...10 3.1.2 Travelling...10 3.1.3 Maximum automatic boost...10 3.2 Commissioning external equipment...10 3.2.1 Digital switch input (DI)...11 3.2.2 Control inputs (AI)...11 3.2.3 Relay outputs (DO)...11 3.2.4 Control outputs (SEC/SEM AO4)...11 3.3 Smart functions...12 3.3.1 Shortcuts...12 3.3.2 Summer mode...12 3.3.3 Cooker hood function...12 3.3.4 Central vacuum function...13 3.3.5 Fireplace function...13 3.3.6 Automatic Home/Away/Boost system...13 3.3.7 Automatic humidity system...13 3.3.8 Automatic air quality control...14 3.3.9 Temperature boost...14 3.4 Heating/cooling...15 3.5 Anti-frost protection...15 3.6 Restoring factory settings...15 3.7 Changing the service code...15 3.8 Use...15 4. Service... 16 4.1 Service reminder...16 4.2 Opening the ventilation unit...16 4.3 Filter...16 4.4 Heat exchanger...16 4.5 Fans...16 4.6 Other servicing...16 5. Alarms and Troubleshooting... 18 5.1 Alarm, cooker hood...18 5.2 Alarm, control panel...18 5.3 Troubleshooting...18 6. List of components... 20 7. Technical data... 21 7.1 Fan outputs (EN 13141-4)...21 7.1.1 W9...21 7.1.2 W9 Econo...21 7.2 Outputs of the components...22 7.3 Acoustic data...22 7.4 Econo, pressure loss in water-heated air heaters...24 7.5 Econo, sizing of the water-heated air heater...24 7.6 Electrical wiring diagram...25 7.6.1 W9...25 7.6.2 Control functions with accessories...26 7.7 Control diagram...28 7.7.1 W9...28 7.7.2 W9 Econo...29 7.8 Dimensions...30 7.9 Weights...30 7.10 Ventilation unit codes...30 7.11 Accessories for installation...30 8. Commissioning form... 31 Warranty Conditions... 32 EC Declaration of Conformity... 33 2 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

! Important information This document is intended for everyone involved in the installation work for or the use of a Swegon CASA ventilation unit. Read this Instructions for Use before you use the ventilation unit. Save the Instructions for Use for future use. If you mislay the Instruction for Use, you can download a new copy from our website. The ventilation unit is not designed to be used by children (below 8 years old) or by persons whose senses, physical or mental capacity or a lack of knowledge and experience limits safe use of the ventilation unit. Such persons may use the ventilation unit if supervised by a person who is responsible for their safety, or according to the instructions. Qualified personnel only Only qualified personnel should carry out installation, configuration and commissioning. Standards and requirements The pertinent national standards and regulations dealing with installation, configuration and commissioning must be followed if the equipment is to operate correctly. At the address, www.swegonhomesolutions.com (Toolbox > Find PDF), you will find the document Project planning instructions for ventilation, in which power supply, sound, air flows and duct system requirements are presented. Measurement and electrical work If you carry out voltage tests, measure the electrical insulation resistance at various points or perform other remedial measures that could damage sensitive electronic equipment, you must first isolate the ventilation unit from the electrical supply grid. Surge protection Swegon recommends that all ventilation units equipped with Smart automatic control be equipped with a surge protection device. Earth fault circuit breaker Swegon recommends that all ventilation units equipped with Smart automatic control be equipped with a residual current device. Comply with local electrical safety regulations when you install electrical equipment. To open the ventilation unit for service Always ensure that the ventilation unit s power supply has been isolated before you open the inspection door! Wait a few minutes before you open the inspection door on the ventilation unit so that the fans have time to stop and air heaters, if fitted, have time to cool down. There are no components inside the electrical equipment cabinet that can be serviced by the user. Leave the servicing or these components to service personnel. Do not restart the ventilation unit before you ve identified the cause of the fault and service personnel have serviced the ventilation unit. Drying laundry A tumbler dryer of extract air type or a drying cabinet must not be connected to the system due to the high moisture content in the air it discharges. However, we recommend the use of a condensing tumbler dryer without duct connection. Models equipped with water-heated air heater When there is a water-heated air heater in the ventilation system (Econo model ventilation unit or duct mounted air heater) the system should be equipped with shut-off damper so that the air heater cannot freeze during a power failure. Commissioning Do not commission the ventilation unit until all carpentry work that produces large quantities of sanding dust or other impurities has been completed. The duct connection spigots of the ventilation unit must be covered by lids while the unit is being transported, kept in storage and mounted at its final location. Make sure that the ventilation unit, filters and ducts are clean and that there are no loose objects in them before you commission the ventilation system. Condensation The surface temperature of the ventilation unit can drop down to 12 C during periods of low outdoor temperature and depending on the moisture content of the air surrounding the unit, moisture may condense on the surface. Consequently, condensation should be taken into account when choosing furnishings that are to be installed in the vicinity of the ventilation unit. NOTE! The manual s original language is Finnish. Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 3

Included in the delivery: Ventilation unit, W9 Smart control panel Modular cable, 20 m, with extension connector Base Condensate discharge tube Instructions for Use (FI, SE, EN + NO, DE) Installation, commissioning and maintenance instruction (FI + SE) Remember to change the filter decal Product information sheet Standard connections: Power supply cable with mains plug Modular cable with RJ9 connector (2 pcs., 1.5 m) Free configurable I/O contacts for connection of accessories (2 pcs.) 1. General Description The most important function of the ventilation system is to ensure clean and fresh indoor air and to remove moisture. The air in the home should be changed at a continuous and sufficient rate to ensure a pleasant indoor climate and avoid damage to building elements caused by dampness. The ventilation unit should be stopped only while service work is in progress. 1.1 Enclosure The ventilation unit s enclosure class is IP 34 when the inspection door is closed. 1.2 Fans The Swegon CASA W9 is equipped with energy-efficient fans with EC motors, advantageous in that their speed is variably controllable and their efficiency is high even when they operate in the lower speed range. The power supply and control cables of the fans have quick-fit connectors making the fans easily removable from the unit, if required. The fans can be controlled in four operating modes from a Smart control panel or in three operating modes from a compatible Swegon CASA cooker hood: Boost = A large airflow is used when the ventilation requirement increases, e.g. for cooking, taking a sauna, showering or drying laundry. Home = Normal airflow. Guarantees that there is sufficient fresh indoor air in the home, and that the building construction is at its best. Away = Low airflow. Reduces power consumption when the ventilation requirement in the home is small. Travelling = Very low air flow and lower supply air temperature. Used when no one is present in the home. (Can only be selected from a Smart control panel.) The unit s weekly timer has four programs that can switch in the various fan modes at the preset times. On the unit with electric reheating, you can also select the required temperature of the supply air. Even when the ventilation unit is being controlled with the weekly timer, it is always possible to change the fan mode from a control panel or a cooker hood. You can select an airflow boost time of 30, 60 or 120 minutes or continuous boost from a Smart control panel. When the unit is controlled from a cooker hood, the fan s airflow boost time is 60 minutes. You can select a damper open time of 30, 60 or 120 minutes. 1.3 Filter The ventilation unit houses a G3 filter for the extract air and a F3 fine filter and a heat resistant filter for the supply air. 1.4 Heat exchanger The plate heat exchanger in W9, which is based on the counterflow technology, is made of aluminium fins and its efficiency is high, above 80 %. The incoming and outgoing air flows in a counterflow plate heat exchanger use separate channels, and thanks to this the heat exchanger does not return any odours or moisture back into the room air. The heat exchanger can be easily removed from the unit for inspection and servicing. 1.5 Temperature The user sets the required value for minimum supply air temperature, and the ventilation unit then strives to reach this temperature if possible. Swegon recommends that the supply air temperature is set between 15 20 C and the factory setting is 17 C, which is sufficient for draught-free ventilation. The supply air temperature should be 3 4 C lower than the room temperature, so that the supply air mixes fully with the room air. Remember the following when setting the supply air temperature: A high temperature setting will also increase the ventilation unit s power consumption. A low temperature setting, for example, 14 C, can cause condensation to collect in the system. The ventilation unit cannot cool the supply air without an air cooler (duct coil), which is available as an accessory. In the Econo models, the setpoint can be set with a thermostat inside the ventilation unit. You can turn the thermostat dial to the minimum setting if heating is not required. 4 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

W9 s intelligent summer function helps to maintain the home s indoor air comfort even during hot summer days. Very economical comfort coolness can be produced almost free of charge by utilising the difference between indoor and outdoor temperatures and the heat exchanger intelligently. The heat exchanger takes care of the cool indoor air during hot summer days and cools the incoming outdoor air. At night the air passes the heat exchanger and the home is cooled with fresh outdoor air. This is managed by an advanced automatic system. 1.6 Protective functions The heat exchanger s freeze protection W9 s defrosting function guarantees continuous and balanced ventilation in the home even during extreme conditions. If there is a risk of the heat exchanger in the ventilation unit freezing, the preheater is activated and the speed of the fans is changed and in doing so the heated extract air prevents freezing inside the heat exchanger. The fans overheating protection The fans have thermal overload cut-outs, which stop them if the temperature rises too high. The controller also stops the fans if a serious malfunction occurs in the ventilation unit. The protective function resets itself automatically when the temperature drops or the malfunction has been remedied. Electric air heater The electric air heater is equipped with overtemperature protection. If the overtemperature protection trips, you must not continue to use the ventilation unit until the cause of the overtemperature protection tripping has been established and the fault has been rectified. An automatic overtemperature protection switches off the air heater if a fault situation arises. This protective device automatically resets itself when the air heater has cooled down. The thermal overload cut out with manual reset can be reset by pressing a button inside the ventilation unit. The acknowledgement buttons are located next to the air heaters. The buttons are marked in the illustrations below. When you press the reset buttons and feel a click, the overtemperature protection (thermal overload cut out) has then been reset. Ventilation unit with water-heated air heater The ventilation unit with water-heated air heater has a temperature sensor that protects the air heater from freezing. The air heater freezing warning alarm appears on the screen if the temperature of the water heated air heater drops too low, but the unit continues to operate normally. If the air heater s temperature drops further, the controller will stop the ventilation unit to prevent the air heater from freezing. An alarm is then shown on the cooker hood. When the temperature of the air heater has risen sufficiently, the ventilation unit and panel show a so-called remaining info-alarm,. The Info alarm can be reset from Alarm on the main menu. Cold supply air The ventilation unit has built-in condensation protection on the ventilation duct. If it is discovered that the supply air is too cold, the ventilation unit stops and an alarm is shown the cooker hood. Temperature sensors If a sensor fault is detected, the ventilation unit enters restricted mode to prevent damage to the ventilation unit. The functions related to the current sensor in question are deactivated and the ventilation unit works as well as possible. The ventilation unit s function returns to normal once the fault has been corrected. Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 5

2. Installation 2.1 Ventilation unit installation site The temperature in the space where the unit will be installed must be more than +10 C. The ventilation unit can be installed in a machine room, store room, etc. where there is a drain. The ventilation unit should not be secured to a wall that borders to a living room or a bedroom due to the risk of noise. 3/8" male thread 200 mm During installation, arrange electric and control cables to make them easily accessible. The ventilation unit is mounted on the floor, on the base included in the delivery. 2.1.1 Mounting on a base The ventilation unit s base is mounted horizontally by using the adjuster feet. In order to facilitate lifting the ventilation unit onto the base, the heat exchanger can first be dismantled from the from the ventilation unit. When the ventilation unit stands on the base, you can, in order to fasten the condensate discharge hose, loosen the front edge screws. 2.2 Condensate discharge Connect the discharge hose to the ventilation unit s condensate discharge connection (3/8 male threads). There are two condensate discharge connections on the ventilation unit, as the ventilation unit is available in both right and left designs. On delivery, one of the condensate discharge connections is plugged inside the unit. The condensate discharge hose is connected to the open connection. The condensate discharge water must be channelled to a floor drain or the like using a hose or tube with an inner diameter of at least 12 mm. The tube must not be connected directly to the sewer. The tube must not have a second water trap or be run horizontally. The damming height of the water trap should be at least 100 mm. Hose to lead off the condensate is included in the delivery of the ventilation unit. The hose has a ready-made loop that serves as a water trap. There is a metal water trap available as an accessory (UVL). Check that the condensate discharge outlet is not clogged and check its outflow by pouring water on the bottom of the ventilation unit. The condensate discharge connection is located on the rear of the unit under the rotary heat exchanger. 2.3 Ducts Install the ventilation ducts, sound attenuators, supply air diffusers, air intake grilles and exhaust air ducts as shown in the ventilation drawings. To prevent the propagation of sound, do not install the ducts directly against structural building elements. Insulate the ventilation ducts in order to reduce loss of heat or cooling energy and to prevent water from condensing on surfaces. In addition, it is advisable to insulate the ducts to prevent the spread of fire. It is of greatest importance to insulate cold ducts without gaps in the insulation, so that moisture cannot condense.! Important! Check whether the ventilation unit has been supplied in the right-hand or lefthand version to make certain that you are connecting the ventilation ducts to the correct duct connection spigots on the unit. Check the ventilation plans to make sure that the duct connections are correctly installed. See also the dimensional drawings in the Section entitled: Technical data. 2.4 To seal around duct penetration collars It is advisable to use a mounting frame for sealing the moisture barrier in the attic tie beams. It is important to the preserve the tightness of the vapour barrier at the duct penetration collars. A building element penetration seal (accessory) will facilitate this. 6 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

This item is available in sets of 3 pieces, for diameters: 100, 125 and 160 mm and are attached to the moisture barrier with tape. Cut up the openings with approx. 10 mm smaller diameter than that of the ducts. Secure the mounting frame in the ceiling with screws through the holes on the sides. The plastic film of the vapour barrier should either be stretched and fastened between the mounting frame and the structural element of the building, or be taped tightly against the mounting frame. The thickness of the insulation and the nature of the surface layer of the ventilation ducts vary depending on insulation material, climate zone and national standards in force. For this reason, Swegon does not offer any recommendations for insulation thickness. Most manufacturers of insulation material offer calculation programs for the calculation of sufficient and correct insulation. In renovation projects, it is advisable to examine the existing ducts to determine whether they are sufficiently and correctly insulated. Insulating in the right way is necessary for the ventilation unit to operate correctly. If the ducts are uninsulated, even across a small area, there is a high degree of risk of condensation and indirect damage. The supply air duct should be fitted with acoustic insulation along the stretch between the unit duct outlet and the sound attenuator, so that fan sound will not be propagated out into the room. In general, ventilation ducts should be insulated in the following manner: Insulate outdoor air ducts run through warm spaces. Exhaust air ducts should always be insulated in accordance with national regulations. See separate project planning instructions (for example Fire resistance classification requirements). Insulate supply air ducts in cold spaces. Insulate extract air ducts in cold spaces. If the air inside the duct is colder than in the surroundings; the insulation should be protected by a vapour barrier.! Important Even small gaps in the insulation impair the sound attenuation and bring about a risk of condensation and consequential damages.! Important! Before commissioning the ventilation system, check that the ventilation unit, filters, condensation drain and ducts are clean and that there are no loose objects inside them. The ventilation ducts should be cleaned regularly and always when the home is renovated.! Important! It is absolutely forbidden to operate the ventilation system during the construction period or if dust-raising work is carried out. Before installing the unit, the ducts should be blanked off with covers to prevent the entry of impurities. Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 7

2.5 Electric and control cables A 1.5 m long cable with earthed plug-in contact is fitted to the ventilation unit for measuring the voltage. The cable extends from the top of the unit. The mains plug serves as the ventilation unit s main switch and it should be connected to an electric socket at an easily accessible spot. For power required, see the Section entitled: Technical data. There is an earthing point on the top surface of the ventilation unit body.! Important! If any further electrical wiring is required, only a qualified electrician shall be allowed to carry out this work. The electric and control cables are located on the upper side of the ventilation unit. Make sure that the electric cable can be connected to a wall outlet without obstruction. On top of the ventilation unit are two modular cables for control of the unit. The maximum connected length of the modular cable in the system is 40 metres. If you lengthen the modular cable within some building element (e.g. in a wall), you should lengthen the cable in a 20 mm conduit, anticipating a possible later change of cabling. When installing the unit, make sure that you provide adequate access to the connector of each cable (loose ones as well), e.g. for servicing and adjusting the unit, if and when the need arises. In multi-storey buildings, a control panel can be used as a so-called hand-held micro terminal in conjunction with service and installation work. Any accessories are either connected to the ventilation unit s four-way connector (2 optional functions) or to the external connection modules (3optional functions). Cables are routed via the lead-through openings in the top of the ventilation unit. The connection of any accessories is described in the section External connections. Cables to connection modules and accessories are not included in the supply. B C A A. Equipment box cover B. Cable entry for any accessories C. Terminal blocks for connection of accessories 8 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

2.6 Installation of the Smart control panel A maximum of two Smart control panels can be connected to the ventilation unit, with different mutual ID numbers. A 20 metre long modular cable is included to connect the control panel. Run the cable to the desired place where the panel will be mounted. A Smart control panel can be mounted up to 40 metres from the unit (using 2 x 20 metre long modular cables). The front panel on the Smart control panel is released using a screwdriver to push the retaining clips through the holes on either side. The modular cable connected to any outlet socket on the panel. Finally, refit the front panel. 2.7 To connect water pipes in the Econo model The pipe connections of the Econo model should be arranged inside the ventilation unit. On both water pipes are 15 mm ball valves for shut-off. The supply water pipe is connected to the pipe with the thermostat. If several control panels are connected in chain, the middle panel s bus termination is moved to the Open position. The jumpers do not need to be adjusted if only one control panel is used. The Econo model requires a continuous circulation of hot water during the heating season. The Econo model ventilation unit should be equipped with shut-off damper so that the water-heated air heater cannot freeze during a power failure. Bus termination: Terminated Bus termination: Open Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 9

3. Commissioning! Important! The functions described in this instruction apply to the ventilation unit and control panels with software version 1.12 and later. In older control panels they only apply to basic functions. The ventilation system s settings in connection with commissioning and servicing are made from the password-protected Settings menu on a Smart control panel. To open the menu, enter code 1234. (The code can be changed). In conjunction with commissioning, you always need to set at least the air flow and carry out any adjustments to the Smart sensor if fitted. Settings Airflow adjustments IO controls Smart functions Heating / Cooling Defrost settings Reset factory settings Change service code 3.1 Air flows Sizing curves for air flows are set out in the section Technical data. A qualified person should set the ventilation unit s and the ventilation equipment s air flows with the help of measurement equipment so that they correspond with the ventilation plan. All basic air flows must be set so that the ventilation unit operates correctly! Enter the settings in the commissioning protocol. In new homes, there is still construction moisture and the house initially requires higher ventilation in order to remove the moisture from the building. A great deal of moisture in the home manifest itself in the form of moisture on cold surfaces. We recommend that in new houses to use higher volumes of air at first to remove moisture. It is recommended in order to improve the efficiency of the ventilation to use an automatic moisture sensor or to actively use the ventilation unit s boost speed, if there is a sauna, pool or equivalent moisture producer in the home. 3.1.1 Setting the basic air flows Before you start to adjust the air flows, ensure that the filters are clean and that there are no foreign objects or debris inside the ventilation unit.! Important! Set the air flows in accordance with national regulations when you commission the ventilation system. The system should be commissioned by a qualified person, and the air flows must not be changed on one s own responsibility, since doing so could disrupt the way the ventilation system operates. Choose commissioning mode when the ventilation unit s fans run at the speed being set and functions that can disrupt the setting, such as anti-freeze protection, are disabled. Airflow adjustments Commissioning mode Control type Home (exhaust) Away (supply) Away (exhaust) Boost (supply) Boost (exhaust) Travelling (supply) Max Smart boost (supply) Fan control Home (supply) 48% 50% 35% 38% 90% 92% 35% 82% Adjust the control functions for the operating modes Home, Away and Boost so that the air flow rates according to the ventilation plan are reached. Fill in your entered settings in the commissioning report. 3.1.2 Travelling You can reduce ventilation unit s power consumption by using the Travelling function, when the home is empty for long periods, among others by reducing the ventilation. Set the supply air flow to Travelling mode. The extract air flow is determined automatically based on the basic air flows. 3.1.3 Maximum automatic boost Automatic functions boost the ventilation as required all the way up to the maximum automatic boost. The functions can be limited by reducing the value. 3.2 Commissioning external equipment External equipment can be connected to the ventilation unit s configurable I/O connections (connection instructions can be found in the section Technical data ). You can connect two optional inputs to the ventilation unit s circuit board and to the SEC/SEM expansion modules, which are available as accessories, you can connect three. The connection of an external duct mounted air 10 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

heater is performed to the SET expansion module, according to the instruction supplied with the accessory. When you connect external equipment to the ventilation unit, the function of I/O connections must be defined in the menu Setting/IO-control (the standard option is shown in the figure). IO 1 IO controls IO 2 IO 3 (ext.) IO 4 (ext.) IO 5 (ext.) Fireplace - DI Boost - DI Away - DI Emg.Stop_NO - DI DDC control - AI 3.2.1 Digital switch input (DI) Switch input options are: 1. Emg. Stop NC 2. Emg. Stop NO 3. Stop 4. Fireplace 5. Cooker hood 6. Central vacuum 7. Forced boost 8. Away 9. Boost 10. Modbus (not priority) 11. Relay control (not priority) The priority of the selected inputs is determined according to the previous list, so that a function that is higher on the list has a higher priority than those below. 3.2.2 Control inputs (AI) 12. By selecting DDC - AI, the ventilation unit s operating mode can be controlled by a voltage signal. Operating mode control 0 10 VDC (+/- 0.5 V) 0 V = Not DDC control 1 V = Travelling 2 V = Away 5 V = Home 8 V = Boost 10 V = Stopped 19. RH AI* 20. CO 2 AI* 21. VOC AI* *) See the instruction supplied with the optional equipment. 3.2.3 Relay outputs (DO) The IO connections can be used for relay control (24 VDC). See the connection instructions in the section Technical data. As relay outputs you can select: 22. Alarms 23. Duct damper 24. Away 25. Boost 26. Modbus* 27. DI control The position of the output is controlled by relay control DI.! Important! The control card can be damaged if you short-circuit the I/O-connection selected by the relay output. 3.2.4 Control outputs (SEC/SEM AO4) The ventilation unit s operating mode can be read as a voltage signal on the AO4 output. If the ventilation unit is controlled variably with Smart functions, the actual value is regulated between the voltages 2 5 8 V. Actual value for the fan speed 0-10 VDC 0 V = Not DDC control 1 V = Travelling 2 V = Away 5 V = Home 8 V = Boost 10 V = Stopped 13. Variable control occurs between the voltages 2 V 5 V 8 V. The ventilation then switches variably between operating modes Away - Home - Boost. Otherwise, control is performed according to the normal DDC control. 14. Modbus AI* 15. PA supply air* 16. PA extract air 17. l/s (supply air)* 18. l/s (extract air)* Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 11

3.3 Smart functions The Smart functions can be activated from the control panel or via external inputs, or they can act as so-called background functions as required. These functions are set as needed from the Smart functions menu. Summer mode Mode Fresh air limit Fresh air start limit User 5 C 14 C Smart functions Smart functions Summer mode Cooker hood function Central vacuum function Fireplace function Auto Home/Away/Boost Auto RH control Auto Air Quality control Temperature boost 3.3.1 Shortcuts From the Shortcuts menu you can set which functions are to be visible to the user. When boost is selected, boosting is used on all connected sensors. Smart functions Fireplace function Travelling Central vacuum function Boost Summer mode Temperature boost Shut down 3.3.2 Summer mode Summer mode bypasses the ventilation unit s heat exchanger when it needs to cool and the outdoor air is colder than the room air. You then get cool outdoor air in the room. The heat exchanger takes care of the cool indoor air during hot summer days. The capacity in summer mode can be selected from a quick menu, and the ventilation unit will then automatically determine the cooling. If you wish to set the function s settings in more detail, you select User mode on the settings menu. Room temperature start limit Supply air temperature min. AC boost Room temperature boost limit Hood boost Use in away mode Off 14 C User 22 C Outdoor air limit determines at which outdoor air temperature the function is permitted. Outdoor air start limit determines the need of cooling. If you select Room air temperature limit, the need of cooling is determined by the room air s temperature exceeding the Room temperature start limit. The supply air limit determines the supply air s minimum temperature. If you change the value, you must take the risk of condensation on the pipes into consideration. By changing the value Boost limit value room temp. during AC boost you can determine at which room temperature the ventilation shall start to variably boost. Selecting Hood boost allows you to operate the damper on a compatible cooker hood to the open position to boost cooling. Selecting In use in Away mode allows you to determine whether ventilation boosting will be permitted in Away mode. 3.3.3 Cooker hood function The cooker hood function balances the ventilation when the cooker fan is used to help prevent excessive negative pressure and improves fume extraction capability of the cooker hood. This function enables you to boost the ventilation if necessary. The function starts automatically when the damper in a Swegon CASA cooker hood is opened or for a cooker hood defined I/O input (IO-control) receives the signal and runs until the damper is closed. The function is put into service from the Settings/Smart functions/cooker hood boost menu. The settings menu is opened when the function is put into service. Cooker hood function Home state Compensation Boost state Compensation Hood boost Roof fan 20% 0% 85% In use Commissioning mode Select Commissioning mode for air flow settings. This activates the signal to be set and the damper is operated to the open position. 12 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

Compensation (home). Set the Home mode s compensation value so that the air flows are kept as set out in the ventilation plan. Compensation (boost). Fine tune Boost mode s compensation value if necessary. Cooker hood boost. Adjust the function s boost speed (supply air %), for example, to achieve sufficient discharge velocity or odour extraction. Choose Roof fan when using a cooker hood whose extract air does not pass through the ventilation unit. Compensation is now achieved by slowing the extract air fan and the cooker hood only controls the roof fan. Also see the section Commissioning external equipment. When the outdoor air is very cold, you can lower the supply air fan s speed so that the supply air temperature does not drop too much. 3.3.4 Central vacuum function The central vacuum function helps to balance the ventilation when using a central vacuum cleaner, which prevents excessive negative pressure and improves the cleaning result. A switching signal can be connected to the ventilation unit s signal input (IO-control) so that the function is activated automatically when the central vacuum is started. The function can also be started from a Smart control panel, the function then runs until the set time has elapsed. The function s settings can be adjusted from the Settings/Smart Functions/Central vacuum boost menu. Run time Central vacuum function 0 min Compensation 20% The Operating time setting is used to state how long a function started from Smart functions should be enabled (maximum 120 minutes). You can adjust the function's effectiveness using the compensation setting (max 50 %). 3.3.5 Fireplace function The smart fireplace function facilitates lighting the fire and ensures clean combustion. Problems caused by too little draught in an open fireplace usually occur in the autumn, when the temperature difference between the indoor and outdoor air is slight and the chimney is cold. The Fireplace function attempts to give a temporary positive pressure in the home when the fireplace is lit, without changing the fan speeds. After the first phase passes the fireplace function switches to maintenance mode and compensates the need of combustion air. The function can be cancelled from the control panel. The function can be started from Smart functions or by enabling the I/O input intended for the fireplace function (IO-control). The function runs for the set time and can also be stopped from a Smart control panel. The function s settings can be adjusted from the Settings/Smart Functions/Fireplace function menu. Run time Fireplace function 60 min Speed difference 20% Selectable settings for the fireplace function are the function for the desired operating time (max. 60 min) and the desired difference in fan speed (max. 50 %). If problems occur with the chimney draught when lighting the fire, the percentage value can be increased slightly from the default value. Use of the fireplace function repeatedly in extreme cold can cause freezing in the ventilation unit. 3.3.6 Automatic Home/Away/Boost system The function is available only on models equipped with a carbon dioxide sensor. The automatic control system controls the ventilation strength variably according to the carbon dioxide level in the home. This function should always be set in conjunction with commissioning. The function can be activated and set from the Settings/ Smart Functions/Home/Away/Automatic Boost menu. NOTE! The function is only visible if the sensor has been detected. Auto Home/Away/Boost Mode In use A+ now 750 ppm Home limit 900 ppm Away limit 600 ppm The settings menu shows the value A + now the current level of carbon dioxide. The function is set by defining the limits values Home and Away. A suitable Home limit value can be determined by reading the A + now value from the menu when a normal number of people are in the home. Similarly you can determine the Away limit value by reading the A + now value when the property has been empty for several hours. 3.3.7 Automatic humidity system The function is available only on models equipped with a humidity sensor. The function is put into service from the Smart-functions menu. The function boosts the ventilation variably based on the moisture load caused by people, for example, increased moisture load in the home due to showering. If the home s moisture level (RH) remains above 60 % for a long period, we recommend that the ventilation is boosted and that a check is made of the moisture source. The function can be activated and set from the Settings/ Smart Functions/Auto RH control menu. Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 13

NOTE! The function is only visible if the sensor has been detected. The function is enabled automatically when the sensor is detected. Mode Auto humidity control RH now 30 % Boost limit Full boost limit Sauna function 5 % + RH 30 % + RH Sauna boost 5 % The value RH now, the current moisture level, is shown on the settings menu. The ventilation starts to be boosted variably when the extract air s humidity has risen as much as the Boost limit value. The Full boost limit value is used to set at which humidity value in the extract air that full boost is reached. Boost increases when the value decreases. If you put automatic Sauna limit into service, the ventilation is boosted with the set value during the sauna. This function prevents any disruptive variations in the fan speeds while the sauna is working. 3.3.9 Temperature boost Temperature boost is available if an air heater has been installed in the system, which is available as an accessory, and if you have set room air as the control method on the Heating/cooling method. The function boosts the air flow so that the required room temperature is reached. The function can be activated and set from the Settings/ Smart Functions/Heating boost menu. The function can be boosted by increasing the boost value. Mode Temperature boost Cooling Gain Use in away mode In use Heating gain 5 % 5 %! Important! Smart measurements: CO 2, RH and VOC. The absolute values in the measurement result affect how well the control works. 3.3.8 Automatic air quality control The function is available only on models equipped with automatic air quality. Automatic air quality boosts the ventilation variably according to the indoor air quality. This function should always be set in conjunction with commissioning. The function can be activated and set from the Settings/ Smart Functions/Auto air quality control menu. NOTE! The function is only visible if the sensor has been detected. Auto Air Quality control Mode AQ now Boost limit Full boost limit Filter time In use 620 ppm 800 ppm 1400 ppm 2 min The settings menu shows the value AQ now the current air quality level. The function is set by specifying the boost limits where you want the ventilation boost to start and the value at which you want the ventilation unit to reach maximum boost. Appropriate values can be established based on the AQ now value shown in the menu. If it seems that the ventilation system reacts too quickly to changes in the air quality level, you can increase the filtering time. 14 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

3.4 Heating/cooling Commissioning and setting of the heating and cooling equipment connected to the ventilation unit are performed from this menu. Detailed instructions are supplied together with accessories. As the factory setting, the ventilation unit normally has internal post heating that is controlled based on the supply air during the heating season (post heating s outdoor air limit). The setting value for the supply air can be decreased in the Away and Travelling operating modes. Heating / Cooling Adj. method Sensors / controls Setpoint Setpoint (away) Setpoint (travelling) Int. post heater Ext. post heater Post heater out limit Ext. post cooling Ext. electric preheater Ext. liquid coil Supply air 17 C 17 C 17 C 8 C 3.6 Restoring factory settings Resets all settings made from the control panel, with the exception of the fan speeds. 3.7 Changing the service code This menu is used to change the code to access the setting menu. Accept Enter code [ 1 2 3 4 ] 3.8 Use Issues with reference to the usage of the ventilation system are dealt with in the instructions for use supplied with the unit. The measurement value for the supply air and room air temperature can be fine tuned from the Temperatures/ control functions menu, if the room temperature that is measured with a separate thermometer deviates from the temperature shown by the ventilation unit.! Important! Turning off the internal post heating or lowering the limit value for the outdoor temperature is not recommended, due to the risk of condensation. 3.5 Anti-frost protection Anti-frost protection on the ventilation unit works automatically. The effect of the anti-frost protection can be increased if necessary by increasing the Efficiency value. Defrost settings Efficiency Supply air limit Fresh air limit Supply air limit (min.) 4 0 C 14 C Reducing the strength of the ventilation means the Supply air limit value prevents cold air from entering the duct system. Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 15

4. Service 4.5 Fans The ventilation unit s fans must be checked at least 4.1 Service reminder The service reminder is activated with preset time intervals and the symbol is displayed on the control panel s screen. As a factory setting, the service reminder is not in operation. It can be put into operation under the main menu item Diagnostics / Service reminder. The recommended service interval for the ventilation unit is six months. When servicing has been performed, the service reminder is reset from Alarm in the main menu. 4.2 To open the ventilation unit Before you begin any service work, isolate the power supply voltage to the ventilation unit by pulling out its electric plug from the wall socket. Wait a few minutes before you open the inspection door of the ventilation unit so that the fans have time to stop and possible air heaters have time to cool down. Open the inspection door by turning the two lock bolts with a screw driver for slotted screw heads. 4.3 Filter The filters should be replaced at least every six months. The filters may need to be cleaned or replaced more often in homes where there is considerable dust or if there are many impurities in the outdoor air. The ventilation unit must not be operated without filters. Use only filters recommended by Swegon in the ventilation unit. This is important, as filters with exactly the same appearance and size can have very different pressure losses and filter capacity. If an incorrect filter is used, it is not certain that the ventilation unit will work as designed. Check in the list of components that you have selected correct filters. every two years. The fans can be removed from the ventilation unit by loosening the retaining nuts (4 per fan) and lift up the fan collar. If you pull the fans out completely, you must also disconnect the quick-fit connectors. If necessary, clean with a soft brush. Be careful not to dislocate the impeller balancing weights. If significant amounts of dirt collect on the fan impeller cleaning should be left to a professional. The fans must be removed from the ventilation unit when the ventilation ducts are cleaned. 4.6 Other servicing Clean the inner surfaces of the ventilation unit by vacuum cleaning or with a damp cloth, if needed. Check that dirt has not collected on the surfaces of the air heater/coolers, clean if necessary. Check that the condensate discharge outlet is not clogged and check its outflow by pouring water on the bottom of the ventilation unit. The condensate discharge connection is located on the rear of the unit under the rotary heat exchanger. Check that the ventilation unit works normally and that no alarms are shown on the screen or on the cooker hood. 4.4 Heat exchanger You should check the condition of the heat exchanger whenever you service the unit. You need to check that the heat exchanger has not frozen to the air handling unit s frame during cold spells. When necessary the air handling unit s inspection doors should be held open for a while before the heat exchanger is removed from the unit, so that the temperatures have time to equalize and to prevent damage to the seals. Remove the heat exchanger mounting brackets secured by four screws. Withdraw the heat exchanger from the unit for inspection. Do not damage the heat exchanger fins. Make sure that the passages through the heat exchanger rotor are not clogged and clean them e.g. with running warm water if required. Never use cleaning agents. The passages of the heat exchanger should be dry before you reinstall the heat exchanger in the unit.! Important! The ventilation unit must not be operated without filters! Use only filters recommended by Swegon in the ventilation unit. Find the correct filter in the Section entitled: Technical data. 16 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.

4 5 3 2 2 1 1 3 1 1. Supply air filter 2. Extract air filter 3. Heat exchanger 4. Supply air fan 5. Extract air fan 1. Fan retaining nuts 2. Fan collar 3. Fan terminal contacts Swegon reserves the right to alter specifications. www.swegonhomesolutions.com 17

5. Alarms and Troubleshooting 5.1 Alarm, cooker hood If the ventilation unit controlled by a cooker hood malfunctions, all signal lamps on the cooker hood s front glass light three times at one minute intervals. Contact an authorised service company. 5.2 Alarm, control panel Any disruptions to the function of the ventilation unit are indicated by symbols on the upper row of the base display. If there is an active alarm in the system, the screen leaves its standby mode and does not enter standby mode again as long as the alarm is active. The symbol for an active alarm is. The condition that has caused the alarm is shown by the Alarm item on the main menu. A so-called info-alarm remains on the screen when the active fault condition ceases. The Info alarm can be reset from Alarm on the main menu. W9.240118 Status Alarms Cause Action T1...T8 sensor fault Sensor is defective or the cable Contact a service company. The ventilation unit runs is loose/not connected. in a restricted operating mode. Post heater error Preheater error Freeze risk waterheated air heater Supply air too hot, control/air heater fault or overtemperature protection has tripped. The temperature of the post heating coil is too high. Control/ air heater fault or overtemperature protection has tripped. Outdoor temperature below 0 C and the temperature of the water has dropped below the alarm limit. Contact a service company! Check the function of the air heater for reheating and preheating. Contact a service company! Check the function of the air heater for preheating. Ensure that the circulation pump in the waterborne heating system is running and that the water supply to the ventilation unit s air heater is hot enough. Faulty supply air fan No speed signal from the fan. Contact a service company. Faulty extract air fan No speed signal from the fan. Contact a service company. Contact fault External emergency stop/fire alarm Service reminder Control panel does not communicate with ventilation unit. External emergency stop enabled. The ventilation unit is stopped by the emergency stop function even though the supply air is very cold. The set service interval has elapsed.! Important! Frost protection function Ice can form in the heat exchanger during periods of cold weather if the extract air is humid. A protective function then automatically reduces the speed of the supply air fan. Under such conditions, variations in the fan speed are therefore normal. Under such conditions, small amounts of ice can form inside the ventilation unit. Restart the ventilation unit. Contact the service company if the error persists. The alarm clears automatically when the external emergency stop or the fire alarm ceases. No info alarm remains afterwards. Service the ventilation unit and acknowledge the service reminder. 5.3 Troubleshooting A ventilation system is a unified whole composed of several system components all of which influence how the system operates. A malfunction in ventilation performance could be caused by any component of the ventilation system or by the way the system has been installed. If during the ventilation unit s warranty period (2 years) after a check (see the enclosed check list) there are functional disruptions in the ventilation unit, you can register these using the response form at the address www.casahelp.fi. There are also instructions, service videos and frequently asked questions on the same website. You directly access a web page with model specific instructions by reading the QR code on the door of the ventilation unit with a smartphone. If a problem or a fault occurs on the ventilation system after the warranty period (2 years), contact our network of authorised service companies on www.swegonhomesolutions.se, your real estate company s service division or another service company that is fully conversant with ventilation repairs. 18 www.swegonhomesolutions.com Swegon reserves the right to alter specifications.